Bleaching and dyeing; fluid treatment and chemical modification – Cleaning or laundering – Removing formation impurities from artifical fiber
Patent
1999-08-12
2000-09-12
Einsmann, Margaret
Bleaching and dyeing; fluid treatment and chemical modification
Cleaning or laundering
Removing formation impurities from artifical fiber
8142, 81492, 8158, 8159, 134 11, 134 10, 134 34, 134 37, D06B 1300, D06F 4300
Patent
active
061171905
ABSTRACT:
A piece of soiled fabric is cleaned by contacting it with a jet of an ionized soil-dislodging gas to dislodge the soil therefrom. The ionized gas and the use of an oppositely charged electrostatic filter aid in preventing redeposition of the soil onto the fabric. The fabric may be agitated while it is contacted with the gas jet. A portion of the piece of fabric may be treated with an electrostatic spotting compound that enhances the effect of the ionized gas and may also enhance the removal of the soil. An apparatus for accomplishing the cleaning includes a container having an interior in which the fabric is received, a gas jet nozzle directed into the interior of the container, a source of a pressurized gas communicating with an inlet of the gas jet nozzle, a gas jet manifold extending from the source to the gas jet nozzle, and a gas ionizer disposed to ionize the pressurized gas passing through the gas jet nozzle.
REFERENCES:
patent: 4685930 (1987-08-01), Kasprzak
patent: 5467492 (1995-11-01), Chao et al.
patent: 5651276 (1997-07-01), Purer et al.
patent: 5916373 (1999-06-01), Schneider
patent: 5925192 (1999-07-01), Purer et al.
Institute of Environmental Sciences and Technology Contamination Control Division, "Electrostatic Charge in Cleanrooms and Other Controlled Environments IEST-RP-CC022.1", Insitute of Environmental Science and Technology.
Chao Sidney C.
Purer Edna M.
Sorbo Nelson W.
Alkov Leonard A.
Einsmann Margaret
Lenzen, Jr. Glenn H.
Raufer Colin M.
Raytheon Company
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